package com.woniu.payservice.controller;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.alipay.api.request.AlipayTradeRefundRequest;
import com.woniu.payservice.config.AlipayConfig;
import com.woniu.payservice.entity.Orders;
import com.woniu.payservice.service.OrdersService;
import com.woniu.payservice.util.OrdersStatus;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

/**
 * @Auther: 李浪  <br/>
 * @Date: 2020/3/23:22:21  <br/>
 * @Description:订单支付类
 */
@Controller
@RequestMapping("/pay")
public class PayController {

    @Autowired
    public OrdersService ordersService;

    @Autowired
    AlipayClient alipayClient;

    //向支付宝发送支付请求
    @RequestMapping("/pay")
    public void pay(HttpServletResponse resp, HttpServletRequest req) throws UnsupportedEncodingException {
        //获取订单信息
        //设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.return_url);
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);
        //商户订单号，商户网站订单系统中唯一订单号，必填
        String out_trade_no = ("1335465468656546");
        //付款金额，必填
        String total_amount = "789";
        //订单名称，必填
        String subject = "物尽其用网商品购买订单";
        //商品描述，可空
        alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no + "\","
                + "\"total_amount\":\"" + total_amount + "\","
                + "\"subject\":\"" + subject + "\","
                // + "\"body\":\""+ body +"\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

        //若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
        //alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
        //		+ "\"total_amount\":\""+ total_amount +"\","
        //		+ "\"subject\":\""+ subject +"\","
        //		+ "\"body\":\""+ body +"\","
        //		+ "\"timeout_express\":\"10m\","
        //		+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        //请求
        String result = null;
        try {
            result = alipayClient.pageExecute(alipayRequest).getBody();
            resp.setContentType("text/html;charset=utf-8");
            //输出
            try {
                PrintWriter writer = resp.getWriter();
                writer.write(result);
            } catch (IOException e) {
                e.printStackTrace();
            }
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
    }

    //获取支付宝反馈信息
    @RequestMapping("/notify")
    @ResponseBody
    public void notify(HttpServletRequest request) throws AlipayApiException, UnsupportedEncodingException {
        //获取支付宝POST过来反馈信息
        Map<String, String> params = new HashMap<String, String>();
        Map<String, String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
            //valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名
	
        /* 实际验证过程建议商户务必添加以下校验：
        1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
        2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额），
        3、校验通知中的seller_id（或者seller_email) 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
        4、验证app_id是否为该商户本身。
        */
        if (signVerified) {//验证成功
            //商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");

            //交易状态
            String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"), "UTF-8");

            //判断该笔订单是否在商户网站中已经做过处理
            //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
            //如果有做过处理，不执行商户的业务程序
            if (trade_status.equals("TRADE_FINISHED")) {
                //注意：
                //退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知
            } else if (trade_status.equals("TRADE_SUCCESS")) {
                //判断该笔订单是否在商户网站中已经做过处理
                //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                //如果有做过处理，不执行商户的业务程序

                //注意：
                //付款完成后，支付宝系统发送该交易状态通知
                //修改数据库订单存储状态
                request.getSession().getServletContext().setAttribute("trade_no", trade_no);
                try {
                    Orders orders = new Orders();
                    orders.setOrdernumber(out_trade_no);
                    orders.setPaynumber(trade_no);
                    orders.setStatus(OrdersStatus.SUCCESSED.getI());
                    ordersService.updateOstateByOnumber(orders);
                } catch (Exception e) {
                    e.printStackTrace();

                }

            }
        } else {
            //验证失败
            //调试用，写文本函数记录程序运行情况是否正常
            //String sWord = AlipaySignature.getSignCheckContentV1(params);
            //AlipayConfig.logResult(sWord);
        }
    }

    //完成支付，跳转页面
    @RequestMapping("/return")
    public String returnresult(HttpServletRequest request) throws AlipayApiException, UnsupportedEncodingException {
        Map<String, String> params = new HashMap<String, String>();
        Map<String, String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext(); ) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i]
                        : valueStr + values[i] + ",";
            }
            //乱码解决，这段代码在出现乱码时使用
//			valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); //调用SDK验证签名
        //——请在这里编写您的程序（以下代码仅作参考）——
        if (signVerified) {
            //商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");

            //支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");

            //付款金额
            String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"), "UTF-8");

            System.out.println("trade_no:" + trade_no + "<br/>out_trade_no:" + out_trade_no + "<br/>total_amount:" + total_amount);
        } else {
        }
        //跳转至订单界面
        return "http://280w4w0785.zicp.vip/orderservice/order/return";
    }

    @RequestMapping("/refound")
    @ResponseBody
    public String refound(HttpServletRequest request, HttpServletResponse resp) throws UnsupportedEncodingException, AlipayApiException {
        //设置请求参数
        AlipayTradeRefundRequest alipayRequest = new AlipayTradeRefundRequest();
        //商户订单号，商户网站订单系统中唯一订单号
        String out_trade_no = request.getParameter("onumber");
        if (out_trade_no == null) {
            return "退款失败";
        }
        //支付宝交易号
        //从数据库取出支付宝交易号
        String trade_no = ordersService.getPayNumberByOnumber(out_trade_no);
        //请二选一设置
        //需要退款的金额，该金额不能大于订单金额，必填
        String refund_amount = request.getParameter("totalMoney");
        //退款的原因说明
        String refund_reason = "个人原因";
        //标识一次退款请求，同一笔交易多次退款需要保证唯一，如需部分退款，则此参数必传
        alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no + "\","
                + "\"trade_no\":\"" + trade_no + "\","
                + "\"refund_amount\":\"" + refund_amount + "\"}");
        //请求
        String result = alipayClient.execute(alipayRequest).getBody();
        System.out.println(result);
        if (result.contains("Success")) {
            //修改数据库
            try {
                Orders orders = new Orders();
                orders.setOrdernumber(out_trade_no);
                orders.setPaynumber(trade_no);
                orders.setStatus(OrdersStatus.REFOUND.getI());
                ordersService.updateOstateByOnumber(orders);
                //发送退款成功信息
                return "退款成功";
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return "退款失败";
    }
}
